On 12/28/2011 12:43 PM, Vincent Diepeveen wrote: > > On Dec 28, 2011, at 7:06 PM, Jonathan Aquilina wrote: > >> On 12/28/2011 11:30 AM, Lux, Jim (337C) wrote: >>> >>> On 12/28/11 8:18 AM, "Jonathan Aquilina"<eagles051...@gmail.com> >>> wrote: >>> >>>> Was thinking that after i sent the email. >>>> >>>> I think the solution to part one of your answer Prentice is the >>>> following. >>>> >>>> You would have spare machines on hand that you would swap out with a >>>> faulty machine allowing you the necessary time to replace parts as >>>> needed with out the risk of spilling the oil on the floor and creating >>>> any hazards in the workplace. >>> >>> And you'll have your oily floor "service depot" somewhere else... (and >>> you'll still have oily floors under your racks.. Oil WILL move >>> through the >>> wires by capillary attraction and/or thermal/atmospheric pumping. >>> Home >>> experiment: Get a piece of stranded wire about 30 cm long. Fill a >>> cup or >>> glass with oil to within a couple cm of the top. Drape the wire >>> over the >>> edge of the cup with one end in the oil and the other end on a piece of >>> paper on the surface of the table. (do all this within a raised edge >>> pan >>> or cookie sheet). Wait a day or two. Observe. Clean up. >>> >>> Bear in mind that a 4 U case full of oil is going to be pretty >>> heavy. Oil >>> has a specific gravity/density of around .7 kg/liter. It's gonna be >>> right >>> around the OSHA 1 person lift limit of 55 lb, and I wouldn't want to be >>> the guy standing under the chassis as you pull it out of the top >>> slot of >>> the rack. So you're going to need a rolling cart with a suitable >>> lifting >>> mechanism or maybe a chain hoist on a rail down between your server >>> aisles, sort of like in a slaughter house or metal plating plant? >>> >> Wait a min guys maybe i wasnt clear, im not saying using standard server >> cases here. > > That's because i guess Jim had already given his sysadmin a few > flippers as a Christmas gift to service the rackmounts. > >> I am talking about actually using fish tanks instead. would >> you still have that leaking issue? > > And after a few days it'll get really hot inside that fish tank. > > You'll remember then the bubbles which do a great cooling job > and considering the huge temperature difference it'll remove quite > some watts - yet it'll keep heating up if you use a box with 4 cores > or more > as those consume more than double the watts than what the shown systems > used. > > But as you had explained to me you only have some old junk there anyway > so it's worth a try, especially interesting to know is how much watts > the fishing > tank removes by itself. Maybe you can measure that for us. > > It's interesting to know how much a few bubbles remove, as that > should be very efficient > way to remove heat once it approaches a 100C+ isn't it? > > Jonathan, maybe you can get air from outside, i see now at the weather > report that it's 13C in Malta, is that correct > or is that only during nights? >
Honestly not sure as I am back state side till next tuesday, but it is possible that that is at night or during the day. As of right now I am not sure. > Maybe Jim wants to explain the huge temperature difference that the > high voltage power cables > cause default and the huge active cooling that gets used for the small > parts that are underground. > Even then they can't really put in the ground such solutions for high > voltages over too long of a distance, > that's technical not possible yet. > > Above me is 2 * 450 megawatt, which is tough to put underground for > more than a kilometer or so, besides that > they need the trajectory to be 8 meters wide as well as a minimum. > > Not sure you want that high temperature in your aquarium, the > components might not withstand it for too long :) > > Anyway, I found it a very entertaining "pimp your computer" youtube > video from 2007 that aquarium and i had a good laugh! > > Vincent > >> _______________________________________________ >> Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing >> To change your subscription (digest mode or unsubscribe) visit >> http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
